/* ============================================
   TRABALHO, EDUCAÇÃO E SOCIEDADE NA EPT
   Identidade Visual IFPR — Manual 2015
   ============================================ */

/* === CORES OFICIAIS IFPR === 
   Verde: #2f9e41 (PANTONE 362 C)
   Vermelho: #cd191e (PANTONE 187 C)
   Preto: #000000
   Branco: #ffffff
*/

/* === RESET E BASE === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Cores oficiais IFPR (Manual 2015) */
    --cor-verde-ifpr: #2f9e41;
    --cor-vermelho-ifpr: #cd191e;
    --cor-preto-ifpr: #000000;
    --cor-branco-ifpr: #ffffff;
    
    /* Cores auxiliares (não oficiais, mas necessárias) */
    --cor-verde-claro: #e8f5e9;
    --cor-vermelho-claro: #ffebee;
    --cor-cinza-escuro: #333333;
    --cor-cinza-medio: #666666;
    --cor-cinza-claro: #f5f5f5;
    
    /* Tipografia Open Sans (Manual IFPR) */
    --font-family: 'Open Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    
    /* Espaçamentos */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Bordas */
    --border-radius: 8px;
    --border-width: 2px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--cor-cinza-escuro);
    background-color: var(--cor-branco-ifpr);
}

/* === CONTAINER === */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* === HEADER === */
header {
    background-color: var(--cor-branco-ifpr);
    border-bottom: 4px solid var(--cor-verde-ifpr);
    padding: var(--spacing-lg) 0;
    text-align: center;
}

.logo-header {
    max-width: 300px;
    height: auto;
    margin-bottom: var(--spacing-md);
}

header h1 {
    font-family: var(--font-family);
    font-weight: 700; /* Open Sans Bold */
    font-size: 2.5rem;
    color: var(--cor-preto-ifpr);
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
}

.subtitle {
    font-family: var(--font-family);
    font-weight: 400; /* Open Sans Regular */
    font-size: 1.25rem;
    color: var(--cor-verde-ifpr);
    margin-bottom: var(--spacing-xs);
}

.institutional {
    font-family: var(--font-family);
    font-weight: 600; /* Open Sans Semibold */
    font-size: 1rem;
    color: var(--cor-cinza-medio);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* === SEÇÕES === */
section {
    padding: var(--spacing-xl) 0;
}

.section-title {
    font-family: var(--font-family);
    font-weight: 700;
    font-size: 2rem;
    color: var(--cor-preto-ifpr);
    text-align: center;
    margin-bottom: var(--spacing-md);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background-color: var(--cor-verde-ifpr);
    margin: var(--spacing-sm) auto 0;
}

.section-intro {
    text-align: center;
    font-size: 1.1rem;
    color: var(--cor-cinza-medio);
    max-width: 800px;
    margin: 0 auto var(--spacing-lg);
}

/* === SEÇÃO CONTEXTO === */
.section-contexto {
    background-color: var(--cor-verde-claro);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius);
}

.contexto-card {
    background-color: var(--cor-branco-ifpr);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--cor-verde-ifpr);
}

.contexto-card h2 {
    font-family: var(--font-family);
    font-weight: 700;
    font-size: 1.75rem;
    color: var(--cor-verde-ifpr);
    margin-bottom: var(--spacing-md);
}

.contexto-card p {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.objetivos {
    background-color: var(--cor-verde-claro);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-top: var(--spacing-lg);
}

.objetivos h3 {
    font-family: var(--font-family);
    font-weight: 600;
    font-size: 1.25rem;
    color: var(--cor-preto-ifpr);
    margin-bottom: var(--spacing-sm);
}

.objetivos ul {
    list-style: none;
    padding-left: 0;
}

.objetivos li {
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-xs);
    position: relative;
}

.objetivos li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--cor-verde-ifpr);
    font-weight: 700;
    font-size: 1.2rem;
}

/* === MAPA CONCEITUAL === */
.mapa-container {
    background-color: var(--cor-branco-ifpr);
    border: var(--border-width) solid var(--cor-cinza-claro);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.mapa-layer {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
}

.layer-title {
    font-family: var(--font-family);
    font-weight: 700;
    font-size: 1.5rem;
    text-align: center;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Núcleo (Preto) */
.layer-nucleo {
    background-color: rgba(0, 0, 0, 0.05);
}

.layer-nucleo .layer-title {
    color: var(--cor-preto-ifpr);
}

/* Categorias e Mediações (Verde) */
.layer-categorias,
.layer-mediacoes {
    background-color: var(--cor-verde-claro);
}

.layer-categorias .layer-title,
.layer-mediacoes .layer-title {
    color: var(--cor-verde-ifpr);
}

/* Contradições (Vermelho) */
.layer-contradicoes {
    background-color: var(--cor-vermelho-claro);
}

.layer-contradicoes .layer-title {
    color: var(--cor-vermelho-ifpr);
}

/* Nós do Mapa */
.nodes {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
}

.node {
    font-family: var(--font-family);
    font-weight: 600;
    font-size: 1rem;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius);
    border: var(--border-width) solid;
    background-color: var(--cor-branco-ifpr);
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 200px;
    text-align: center;
}

.node:hover {
    transform: translateY(-4px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.node:focus {
    outline: 3px solid var(--cor-verde-ifpr);
    outline-offset: 2px;
}

/* Cores dos nós - Identidade IFPR */
.node-nucleo {
    border-color: var(--cor-preto-ifpr);
    color: var(--cor-preto-ifpr);
}

.node-nucleo:hover {
    background-color: var(--cor-preto-ifpr);
    color: var(--cor-branco-ifpr);
}

.node-categoria,
.node-mediacao {
    border-color: var(--cor-verde-ifpr);
    color: var(--cor-verde-ifpr);
}

.node-categoria:hover,
.node-mediacao:hover {
    background-color: var(--cor-verde-ifpr);
    color: var(--cor-branco-ifpr);
}

.node-contradicao {
    border-color: var(--cor-vermelho-ifpr);
    color: var(--cor-vermelho-ifpr);
}

.node-contradicao:hover {
    background-color: var(--cor-vermelho-ifpr);
    color: var(--cor-branco-ifpr);
}

/* Elemento Transversal */
.elemento-transversal {
    margin-top: var(--spacing-xl);
    display: flex;
    justify-content: center;
}

.transversal-card {
    background: linear-gradient(135deg, var(--cor-verde-claro) 0%, var(--cor-vermelho-claro) 100%);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    border: var(--border-width) solid var(--cor-preto-ifpr);
    max-width: 700px;
    text-align: center;
}

.transversal-card h3 {
    font-family: var(--font-family);
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--cor-preto-ifpr);
    margin-bottom: var(--spacing-sm);
}

.transversal-card p {
    font-size: 1.1rem;
    line-height: 1.8;
}

.destaque-verde {
    color: var(--cor-verde-ifpr);
    font-weight: 700;
}

.destaque-vermelho {
    color: var(--cor-vermelho-ifpr);
    font-weight: 700;
}

/* Painel de Explicação */
.conceito-panel {
    background-color: var(--cor-branco-ifpr);
    border: var(--border-width) solid var(--cor-verde-ifpr);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    position: relative;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.conceito-panel h3 {
    font-family: var(--font-family);
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--cor-verde-ifpr);
    margin-bottom: var(--spacing-md);
}

.conceito-panel p {
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
}

.conceito-referencia {
    font-style: italic;
    color: var(--cor-cinza-medio);
    font-size: 0.9rem;
    margin-top: var(--spacing-md);
}

.close-btn {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background-color: transparent;
    border: none;
    font-size: 2rem;
    color: var(--cor-cinza-medio);
    cursor: pointer;
    transition: color 0.3s ease;
}

.close-btn:hover {
    color: var(--cor-vermelho-ifpr);
}

/* === SEÇÃO VÍDEOS === */
.section-videos {
    background-color: var(--cor-cinza-claro);
}

.videos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.video-card {
    background-color: var(--cor-branco-ifpr);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.video-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
}

.video-header {
    padding: var(--spacing-md);
    color: var(--cor-branco-ifpr);
    text-align: center;
}

.video-header-verde {
    background-color: var(--cor-verde-ifpr);
}

.video-header-vermelho {
    background-color: var(--cor-vermelho-ifpr);
}

.video-header-preto {
    background-color: var(--cor-preto-ifpr);
}

.video-numero {
    display: block;
    font-family: var(--font-family);
    font-weight: 300;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-xs);
}

.video-header h3 {
    font-family: var(--font-family);
    font-weight: 700;
    font-size: 1.25rem;
    margin: 0;
}

.video-wrapper {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    height: 0;
    overflow: hidden;
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.video-description {
    padding: var(--spacing-md);
    line-height: 1.8;
}

.video-description p {
    margin: 0;
    color: var(--cor-cinza-escuro);
}

/* === SEÇÃO REFERÊNCIAS === */
.section-referencias {
    background-color: var(--cor-branco-ifpr);
}

.referencias-content {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    background-color: var(--cor-cinza-claro);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--cor-verde-ifpr);
}

.referencias-lista {
    list-style: none;
    padding-left: 0;
}

.referencias-lista li {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
    position: relative;
    line-height: 1.8;
}

.referencias-lista li::before {
    content: '📚';
    position: absolute;
    left: 0;
    font-size: 1.2rem;
}

/* === FOOTER === */
footer {
    background-color: var(--cor-preto-ifpr);
    color: var(--cor-branco-ifpr);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.logo-footer {
    max-width: 250px;
    height: auto;
    filter: brightness(0) invert(1); /* Inverte para branco */
}

.footer-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.footer-instituicao {
    font-family: var(--font-family);
    font-weight: 700;
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
}

.footer-campus {
    font-family: var(--font-family);
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
    color: var(--cor-verde-ifpr);
}

.footer-disciplina {
    font-family: var(--font-family);
    font-weight: 400;
    font-size: 0.9rem;
    line-height: 1.6;
}

.footer-autoria {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.footer-autoria p {
    font-size: 0.9rem;
    line-height: 1.6;
}

.heart {
    color: var(--cor-vermelho-ifpr);
    font-size: 1.2rem;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-bottom p {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
}

/* === RESPONSIVIDADE === */
@media (max-width: 768px) {
    header h1 {
        font-size: 1.75rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .videos-grid {
        grid-template-columns: 1fr;
    }
    
    .nodes {
        flex-direction: column;
        align-items: stretch;
    }
    
    .node {
        min-width: auto;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .logo-header,
    .logo-footer {
        max-width: 200px;
    }
}

/* === ACESSIBILIDADE === */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Alto contraste para leitores de tela */
@media (prefers-contrast: high) {
    .node {
        border-width: 3px;
    }
    
    .section-title::after {
        height: 6px;
    }
}

/* === VÍDEO DESTAQUE === */
.video-card-destaque {
    border: 3px solid var(--cor-verde-ifpr);
    box-shadow: 0 8px 20px rgba(47, 158, 65, 0.3);
    position: relative;
}

.video-card-destaque::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(135deg, var(--cor-verde-ifpr), var(--cor-verde-claro));
    opacity: 0.1;
    border-radius: var(--border-radius);
    z-index: -1;
}

.badge-video-ativo {
    display: inline-block;
    background: var(--cor-verde-ifpr);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-left: 0.5rem;
    animation: pulse-badge 2s ease-in-out infinite;
}

@keyframes pulse-badge {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.05);
    }
}

.video-link {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid #e0e0e0;
}

.video-link a {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--cor-verde-ifpr);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.video-link a:hover {
    color: var(--cor-verde-claro);
    text-decoration: underline;
}

/* === PRINT === */
@media print {
    header,
    footer,
    .video-wrapper {
        display: none;
    }
    
    body {
        font-size: 12pt;
        color: black;
        background: white;
    }
    
    .node {
        border: 2px solid black;
        page-break-inside: avoid;
    }
}